Control of grub, the main insect pest of Polygonatum polygonatum

Huang Jing, also known as tiger ginger, chicken head ginseng. It is the dried rhizome of Polygonatum polygonatum, Polygonatum polygonatum or Polygonatum polygonatum. According to the differences in the characters of original plants and medicinal materials, Rhizoma Polygonatum can be divided into three types: ginger, chicken head and rhubarb. The original plant of ginger-shaped yellow essence is multi-flowered yellow essence, the original plant of chicken head yellow essence is yellow essence, and the original plant of rhubarb essence (also known as dish-shaped yellow essence) is Yunnan yellow essence. Among the three, the quality of Rhizoma Polygonatum is the best.

The alias of Huang Jing

Sweet yellow essence, turmeric essence, white and yellow essence.

The original plant of Polygonatum polygonatum

Polygonatum polygonatum, also known as Polygonatum polygonatum, Polygonatum angustifolia. Perennial herbs; rhizomes fleshy, often nodular, 1-2 cm in diam.; aboveground stems Terete, hollow, 50-100 cm high, unbranched. Leaves alternate, oval, ovate-lanceolate to oblong-lanceolate, 10-18 cm long, 2-7 cm wide, with 5-7 veins, smooth glabrous on both sides, without petiole. Flowering from May to June; flowers axillary, 2 × 7 arranged in umbels or single flowers; total pedicel pendulous, ca. 2 cm long, pedicels ca. 1 cm long; perianth yellowish green, tubular, 1.8 × 2.5 cm long, lobes 6, 3 × 4 mm long; stamens 6, filaments 3 × 4 mm long; slightly flattened, papillose or pilose, upper end slightly inflated to saccate, anthers 3.5 cm long Ovary superior, 3-loculed, style 12-15 mm long. Berries globose, ca. 1 cm in diameter, blue-black at maturity, with 3-9 seeds. Born in hillside forests, grasslands and shrubs. Distributed in our province and Jiangsu, Zhejiang, Anhui, Shandong, Jiangxi, Fujian, Henan, Hubei, Hunan, Guangxi, Sichuan, Guizhou, Shaanxi and other provinces and regions. Wild or cultivated.

Grubs are the main pests of Polygonatum polygonatum. Let's learn about grubs and how to control them.

What is a grub?

Grubs are the larvae of beetles, also known as white silkworms and walnut worms. Adults are commonly known as beetles or beetles. Harms a variety of plants and vegetables. According to its feeding habits, it can be divided into three types: herbivore, fecal herbivore and saprophyte. Herbivore is a worldwide underground pest with a wide range of feeding habits, which harms a variety of crops, cash crops and flower seedlings, and likes to eat seeds, roots, tubers and seedlings that have just been sown. In addition, some kinds of grubs can be used as medicine, which is beneficial to human beings.

The harm of grubs to Polygonatum polygonatum: grubs harm the larvae, harm the roots, bite off the seedlings or eat the roots of the seedlings, resulting in broken seedlings or holes in the roots, and the harm is serious.

The control method of grub: the seeds can be mixed with 75% octanoic acid EC according to 0.1% seed quantity, or irrigated with 1000 times of 90% trichlorfon solution during the field occurrence period.